Radiator-cap.



N. nu BOIS. RADIATOR CAP. APPLICAT ION FILED "AR. IZLIBIS 1,223, 156.Patented Apr.17,1917.

, I WITNESSES: 4 mvmrgg A TTPRNE rs citizen of the United tates, and aresident- "NELSON DU B018, 01 LONG BEACH, CALI! DENIA- BADIATOR-GAP.

Specification of Letters Patent. I 'atnted Apr. 17,1917.

Application filed March 12, 1915. Serial No." 14, 13a.

Toallwhomitmayoomm:

Be .itknown that I Nnnson DUlBOIS, a

of Long Beach, in the county of Les Angeles and State of California,have invented a' certain new and useful Improvement in Radiator-(laps,of which the following is a specification.

This invention relates to an improvement in radiator caps, and one oftheprincipal objects of the invention is to provide a cap which may bereadily put in' place upon the stem of the radiator, and which may beadjusted for securely sealing the stem against leakage. I

Another ob ect of the invention is to provide a radiator cap in tlieform of a gasket adapted to be secured upon a radiator stem and adaptedto be engaged by a cross piece carried by a shaft. or studonwhich-is'pro- 'vided a closure or plate fitted with suitable gasketsand adapted to be clamped intoengagement with the stem through the medium ofa cam lever for securely sealing the stem.

A further object is to provide a' device of the class described whichwill be extremely simple, durable, efficient in operation,andinexpensive to manufacture.

Which will become apparent as the descrip- 'through a radiator stem anda cap con structed according to my invention, showing the cap in lockedposition on the stem; ig. 2 represents a similar sectional view takenthrough'the cap and stem showing the cap in unlocked position;

Fig. 3 represents a vlew in section taken transversely on the planeindicated by the line of Fig. 2, looking inthe direction indicated bythe arrow; i

Fig. 4 represents a view looking down into the stem, the shaft or studbeing shown in 5 section, and the cross piece being shown in positionbefore being. turned beneath the bushing; V

Withthese and other objects in view Fig. represents a view in section ofthe" upper end of th( stem and of a bushing of modified formnhich may beutilized with my device.

Referring mora particularly to the drawing, at 5 is represented theupper portion of anauton'iohile radiator, and at 6 is shown the radiatorstem, through which the cooling liquid may be, poured into the radiator.

In the embodimrnt shown in the first f9 1r figures of the dre wing. theupper end of the stem is enlarged at 7 and is provided with an'enlargen'ient of the bore in the stem, saidnnlarged p )i'tlim 7 beinginternally threaded as shown at 9. An annular extersition is disposed inspaced relation with the shoulder llforni 2d at the lower terminal ofdiax the enlargement 3 of said stem.

Bushing 10 is )rovided internallyv at metrically opposed points, withrecesses 12, of a width equal to .or slightly greater than the reducedends [3 of a cross piece 14. The latter is secured 1y meansof a 'setscrew 15 on the lower end of a vertically disposed. threaded shaft rrstud'lfi on which it .is turned. This stud is provided above'the crosspiece 1 l wit 1 a sleeve 17, andabovc the sleeve upon the sh ft or studis slidably disposed an annu :lr, closure or plate 18 equipped withgasket 19 and a small washer 20. The. :losure or plate is provided witha dependin; concave marginal flange 21, within whicl the gasket 19 fits.This gasket is made otrubber or some other-resilient material. Thewasher 20 is of smdller diameter thanthc gasket, andsimilarly to .f thegasket and. t ie closure or plate is provided with a cent ral openingthrough which the shaft or stud 16 extends. The closure, gasket, and"washer are thus slida'bly disposed upontlle siaft.

The upper cm' of the shaft is centrally recessed or slotted as "at 22for the reception of a cam 23 carried on'the inner end of a cam lever24. Tl: e camis pivoted at a point off center to the s tern by means ofa suitable pin 25, in such manner that when thecam' lever is throwndownwardly pressure will be,

exerted upon the closureplatethrough the mediumofthe ea in.

The bushing 10 shown in Fig. 5.15; devised for attachment to stemsnotprovided'with slidahly extending through the plute, u cross betweenme gasket end cross ieee against piece arranged to engage againsttheoppowhich the gasket is pressed w en the pllte site side of thebushing, a gasket amused is drawn along the shaft.

between the closure plate anti bbilshlng, NELSON DU B018. 5 means whernbthe closure plate may ,be Witnesess:

drawnalong he shaft to comprese the gaze- O. M. VA wu'rmn,

ket against the radiator stem, and means 0. E. Bnuaumn.

